Abstract:
:The aim of the present study was to investigate possible neurophysiological effects of intermittent 15 sec on/off cycle, 60 Hz, 10 microT magnetic field exposure on patients with perceived "electromagnetic hypersensitivity" (EHS), and control subjects during rest and performance of a mental arithmetic task. Twenty participants (15 female, 5 male, 31-60 years old, mean 45.8 +/- 0.7 years) were invited from the group of EHS patients. Twenty volunteers (15 female, 5 male, 31-59 years old, mean 45.0 +/- 0.7 years?) served as a control group. The test protocol consisted of a set of examinations: EEG, visual evoked potentials, electrodermal activity, ECG, and blood pressure. The total duration of the test was 40 min, divided into two 10 min rest periods and two 10 min periods of mathematical performance. Magnetic field and sham exposures were presented randomly during these periods, resulting in four different conditions: Field-Rest, Sham-Rest, Field-Math, and Sham-Math. The data showed significant main effects of the Group factor (EHS vs. control subjects) on heart rate (F(1,80) = 20.6; P < 0.01), heart rate spectrum ratio (F(1,80) = 9.5; P = 0.02), and electrodermal activity (F(1,76) = 4.2; P = 0.04), whereas EEG characteristics did not differ between groups. The Condition factor (mathematical task vs. relaxed) showed main effects for heart rate (F(1,80) = 14.8; P < 0.01), heart rate spectrum ratio (F(1,80) = 7.8; P = 0.06), electrodermal activity (F(1,76) = 56.8; P < 0.01), and alpha and theta spectral bands of EEG. Magnetic field exposure did not affect autonomous system or electroencephalographic variables of either group. These data do not indicate that EHS patients or control are affected by low-level 60 Hz magnetic field exposure. However, persons reporting EHS differed from the control subjects in baseline values of investigated physiological characteristics. Perhaps EHS patients have a rather distinctive physiological predisposition to sensitivity to physical and psychosocial environmental stressors.
journal_name
Bioelectromagneticsjournal_title
Bioelectromagneticsauthors
Lyskov E,Sandström M,Mild KHsubject
Has Abstractpub_date
2001-10-01 00:00:00pages
457-62issue
7eissn
0197-8462issn
1521-186Xpii
10.1002/bem.73journal_volume
22pub_type
杂志文章abstract::Treatment with direct electric current (DC) can inhibit tumor growth in several systems. To evaluate the cellular reactions generated by this treatment, we stimulated mouse mastocytoma P815 cells with DC and examined their viability and ultrastructural characteristics, as well as the effect of DC on surface carbohydra...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/1521-186x(200012)21:8<597::aid-bem6>3.0.co
更新日期:2000-12-01 00:00:00
abstract::This study analyzes if an external magnetic stimulus (2 kHz and approximately 0.1 μT applied near frontal cortex) influences working memory, perception, binary decision, motor execution, and sustained attention in humans. A magnetic stimulus and a sham stimulus were applied to both sides of the head (frontal cortex cl...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.21944
更新日期:2016-01-01 00:00:00
abstract::The aim of the present study was to identify the effects of a static magnetic field (SMF) on rat brain structures that control autonomic functions, specifically heart rate and heart rhythmicity. The experiments were carried out on 44 male Wistar rats under ketamine-xylazine anesthesia. SMF was induced using samarium-c...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.10186
更新日期:2004-04-01 00:00:00
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journal_title:Bioelectromagnetics
pub_type: 临床试验,杂志文章
doi:10.1002/bem.20103
更新日期:2005-04-01 00:00:00
abstract::Magnetic fields (60 Hz) of 1.5 and 80 microT caused a significant reduction in the weight of Drosophila melanogaster. Moreover, fruit flies in an 80 microT field showed lower developmental stability than either those in a 0 or 1.5 microT field. Developmental instability was measured by fluctuating asymmetry and freque...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:
更新日期:2000-09-01 00:00:00
abstract::A 275-MHz exposure system, consisting of a circular waveguide irradiator and a transparent plastic animal cage, has been developed to accommodate rhesus monkeys weighing up to 15 kg. The vertically oriented waveguide is composed primarily of stainless steel and is fitted with an inner cage fabricated from a tubular se...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.2250050109
更新日期:1984-01-01 00:00:00
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journal_title:Bioelectromagnetics
pub_type: 杂志文章
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journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.20601
更新日期:2010-10-01 00:00:00
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journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.20020
更新日期:2004-05-01 00:00:00
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journal_title:Bioelectromagnetics
pub_type: 杂志文章
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更新日期:1997-01-01 00:00:00
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journal_title:Bioelectromagnetics
pub_type: 杂志文章,评审
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更新日期:2018-04-01 00:00:00
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journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.20529
更新日期:2010-01-01 00:00:00
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journal_title:Bioelectromagnetics
pub_type: 评论,杂志文章
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更新日期:1996-01-01 00:00:00
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journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.2250040206
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journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.2250030303
更新日期:1982-01-01 00:00:00
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journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.2250080307
更新日期:1987-01-01 00:00:00
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journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.2250160409
更新日期:1995-01-01 00:00:00
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journal_title:Bioelectromagnetics
pub_type: 杂志文章,评审
doi:10.1002/bem.2250130714
更新日期:1992-01-01 00:00:00
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journal_title:Bioelectromagnetics
pub_type: 杂志文章
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更新日期:2010-07-01 00:00:00
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journal_title:Bioelectromagnetics
pub_type: 杂志文章,随机对照试验
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更新日期:2018-07-01 00:00:00
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journal_title:Bioelectromagnetics
pub_type: 杂志文章
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journal_title:Bioelectromagnetics
pub_type: 杂志文章
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更新日期:1984-01-01 00:00:00
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journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.10122
更新日期:2003-09-01 00:00:00
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journal_title:Bioelectromagnetics
pub_type: 杂志文章
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更新日期:2001-09-01 00:00:00
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journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.20396
更新日期:2008-07-01 00:00:00
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journal_title:Bioelectromagnetics
pub_type: 杂志文章
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更新日期:2017-12-01 00:00:00
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journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/(sici)1521-186x(1997)18:7<491::aid-bem4>3.
更新日期:1997-01-01 00:00:00
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journal_title:Bioelectromagnetics
pub_type: 杂志文章
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更新日期:2012-02-01 00:00:00
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journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.20438
更新日期:2009-01-01 00:00:00
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journal_title:Bioelectromagnetics
pub_type: 信件
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更新日期:2015-04-01 00:00:00